I don't think it's fair to expect Nicholas to go around and correct everyone all the time, and draw attention to a decision the late King made without ever being able to explain it in a way most people could understand. Instead, one moves on.
Nicholas himself doesn't use the princely title, and so he behaves correctly and in accordance with his grandfathers wish.
I really don't think the Custodian or any other member spends any energy feeling irritation or frustration over what title Nicholas is given by a news report, and I certainly hope they see all positive attention towards him or any other member of the RRF as a plus for the family as a whole, and the cause of monarchy itself.
Can anyone confirm if the Facebook profile as per below is Nicolae's official and right one?
https://www.facebook.com/nicolaealromaniei/
In his bio on FB he does not mention having lost his position in the RF.
If this profile is his actual one, he has chosen to present himself publicly as an heir to the Romanian throne. His choice, not others'...
"..... On 30 December 2007 Nicholas' maternal grandfather, King Michael of Romania, announced for Nicholas, the title Prince of Romania with the style of "Royal Highness", which came into effect on Nicholas' 25th birthday, 1 April 2010. By virtue of his new title, he has become a member of the Romanian Royal Family.
On the same occasion, King Michael, citing EU legislation and the values of the Romanian society, signed a new Statute of the Royal House, called Fundamental Rules of the Royal Family of Romania, apparently to entail his heritage and that of his predecessors, and also in an attempt to replace the 1884 Statute. By this new statute, there is a new line of succession to the defunct throne of Romania, in which Nicholas is in the third place, after his aunt and mother. Whilst otherwise, according to the last democratically enacted royal Constitution of Romania, dated 1923, which was based on Salic law, Nicholas would be barred from the throne. On the same occasion, King Michael also asked the Romanian Parliament that, should it consider restoring the monarchy, it should also abolish the salic law of succession.
According to the new Statute, Nicholas became a member of the Royal Family, part of the broader Royal House, on 1 April 2010. He is a dynast and a member of the Romanian Royal House. As Nicholas' aunt, Crown Princess Margareta of Romania is childless, it is most likely that upon the deaths of his grandfather, aunt, and mother, Nicholas would succeed as the future Head of the Romanian Royal House.
According to designations of King Michael, the Headship of the Royal House entails governance over the foundations of the family, tenure of the estates and residences of the House, as well as sovereignty over the House orders of chivalry, among other things.
As a descendant of the Electress Sophia of Hanover, he is also 90th in the line of succession to the British Throne.
On 29 February 2008, Nicholas Medforth-Mills declared in an interview with the Romanian daily newspaper Cotidianul that if the Romanian people asked him to become a King, he wouldn't refuse."